PT-2024-18395 · Mattermost · Mattermost

Eva Sarafianou · Published 2024-02-29 · Updated 2025-05-12 · CVE-2024-1888

Positive Technologies (AI Summary)

CVSS v4.0

5.3

Medium

Base vector

AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions Mattermost versions prior to v8.1.9

Description Mattermost fails to check the invite guest permission when inviting guests of other teams to a team, allowing a member with permissions to add other members but not to add guests to add a guest to a team as long as the guest was already a guest in another team of the server.

Recommendations For versions prior to v8.1.9, update to version v8.1.9 or later to resolve the issue. As a temporary workaround, consider restricting the use of the invite guest permission to minimize the risk of exploitation.

Fix

Improper Access Control

Weakness Enumeration

CWE-284

Related Identifiers

CVE-2024-1888

GHSA-PFW6-5RX3-XH3C

GO-2024-2593

Affected Products

Mattermost

References · 12

• https://mattermost.com/security-updates · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2024-1888 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-1888 · Security Note
• https://osv.dev/vulnerability/GHSA-pfw6-5rx3-xh3c · Vendor Advisory
• https://osv.dev/vulnerability/GO-2024-2593 · Vendor Advisory
• https://github.com/mattermost/mattermost · Note
• https://t.me/cvenotify/72674 · Telegram Post
• https://twitter.com/VulmonFeeds/status/1763164502416032022 · Twitter Post
• https://twitter.com/CVEnew/status/1763121310966616525 · Twitter Post
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-1888 · Note
• https://github.com/advisories/GHSA-pfw6-5rx3-xh3c · Note
• https://t.me/cvenotify/121740 · Telegram Post